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FREQUENCY COUNTER
Manufacturer: Hewlett-Packard
Model: Model 5381 A
Cost: $595 (1982)
Description
An instrument for measuring the frequency of
any periodic voltage.
Specifications
Range | 10Hz to 80 MHz |
Sensitivity | 50 mV rms |
Accuracy | ±1 count ±10 parts per million |
Max Input | 200 Volts (DC and peak AC) for frequencies less than 100 kHz |
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Operating Instructions
- Connect signal to be measured to INPUT.
- Set Attenuator to X 100.
- Turn counter on.
- Set the GATE TIME as appropriate. This sets both the
measurement time (.1 sec, 1 sec and 10 sec) and the
resolution (10 Hz and 0.1 Hz respectively). The GATE
TIME switch also controls the units of the display, as
indicated on the faceplate.
- If the display is unstable, reduce the ATTENUATOR as
necessary.
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keywords: electrical measurement device, frequency measurement device.
Document created Circa 1992. Original author: Unknown.
Last updated 06/21/96. Revised by David Harrison.